There is any way to custom hold forces applied on collision into rigibody

Hi, since I have implemented my own spring system I want object just to hold collision (so it doesn't have a rigid body attached but are connected to rigid body object). I want to hold collision with customization of forces to pass some of it into spring.
Now on collision the all impact force is applied to object with rigid body attached into it and springs are not noticeable at that point.
So this is possible? As far I can decompile build in physics methods it calls external c++ methods.